Strip-feeding mechanism for adding machines



June 16, 1925.

B. P. HAYES STRIP FEEDING MECHANISM FOR ADDING MACHINES Original FiledFeb. 27,- 1920 2 Sheets-Sheet 1 Jun 16,. 1925.

' B. P. HAYES STRIP FEEDING MECHANISM FOR ADDING MACHINES 2 Sheets-Shaet 2 Original Filed Feb. 2'7, 192.0

A .TTORNE V Patented June 16, 1925. I UNITED STATES PATENT OFFICE.

BENJAMIN P, HAYES, OF KANSAS CITY, MISSOURI.

STRIP-FEEDING MECHANISM FOR ADDING MACHINES.

Original application filed February 27, 1920, Serial No. 861,748.Divided and this application filed July 5, 1921, Serial No. 482,344.Renewed May 8, 1925.

To all whomit may concern: I Fig. IV is a detail side elevation of theBe it known that I, BENJAMIN P. I-Lirns, operative portions of the jawsshowing a a citizen of the United States, residing at record stripengaged thereby. Kansas City, in the county of Jackson and Referringmore in detail to the drawings: 5 State of Missouri, have inventedcertain I designates 'enerally an adding machine so new and usefulImprovements in Stripcomprising a crank shaft 2 and its operatingFeeding Mechanism for AddingMachines; handle 3, and printing mechanismindiand I do declare the following to be a full, cated by the linkedribbon t carried by the clear, and exact description of the invendrums 5and extending across a rotatable tion, such as will enable othersskilled in platen (3 that is supported by frame plates 05 the art towhich it ap'pertains to make and T e, which are included in the assemblyuse the same, reference being had to the acof the main machine.companying drawings, and to the figures Type, and means for striking thetype of reference marked thereon, which form a against the inked ribbonto effect the printpart of this specification. ing impression, areincluded in the main My invention relates to record strip fcedmachine,but form no part of the present ing mechanism for adding or likemachines, invention and are not illustrated, in order and is a divisionof my application for p ir to avoid encumbering the description of theent filed February 27, 1920, Serial No. Present invention. 20 361,313The main machine also includes a dash In adding or like machine h i pot9 for cushioning return movement of the amounts are consecutivelyentered i th crank shaft and operative parts of the main machine andaccumulated upon a register, 111a l1i11o,-and for convenience theoperating the individual amounts are usually printed e sm for the stripfeed is connected 25 upon a'record strip which must be advanced h dash PPiston d 10, althoug f ll i h t mechanism bl the invention should not belimited to such from the main machine being provided to opera ingmechanism, as any lever conneceffect the stepped advance, and it is th btion between the strip feed and the main ject of the present inventionto pr ide crank shaft may be substituted for the spesimple and accurateoperating mechanism ciiic means herein shown. for effecting such steppedadva t a h 'lhe record strip 12 is carried on a roller Operation f th ihi 13, rolatably mounted in slots 14 in arms In accomplishing thisobject I have pro- 1.5, extending in parallel relation from the videdimproved details of construction, the T l 0 h frame plates 78, the slotsbeing 35 prefer-red form of hi h i ill t t d i inclined downwardlytoward the machine, the accompanying drawings, wherein the 0 t at t eroller may feed by gravity as t i udyanging ch ni m is ho i the diameterof the strip rolls diminishes, nection with an adding machine which, forand n'iaintain the run of the strip to the convenience, is illustratedas that forming printing position in the same fixed path,

40 Rho subject matter of my co-pending applithe outer ends of the slots14- opening into cation. the enlarged mouths 16 adapted for receiv- Inthe drawings: ing the heads on the roller, so that the roller F ig. I isa perspective view of my immay be projected therothrough to seat in theproved strip advancing mechanism, and a inclined slots, the roller beingreduced in 45 portion of an adding machine, illustrating diameterbetween its ends so that the outer the combination of the stripadvancing portions form heads which serve to retain mechanism with themain machine, parts of the roller in position after it has been seatedthe latter being broken away for better ilin the slots The run of thestrip between lustration. the roller and printing position is along 50Fig. II is a side elevation of the strip the back plate 17 of the mainmachine, so advancing mechanism, a part of the machine that it is guidedbetween the inked ribbon frame, and the operating crank shaft. andplaten. After reaching the printing Fig. III is a detail perspectiveview of the position the strip runs over the platen to strip advancingjaws and their actuating which it is held by pressure rolls 18 on alevers. shaft 19 which is urged toward the platen by springs connectedwith the shaft 19, and with studs 21 on the frame members 7-8.

The strip feeding mechanism engages the strip after it leaves theplaten, and comprises a pair of jaws and 2%, the jaw 28 being locatedbeneath the strip and mounted on arms 25 that are pivotally mounted attheir lower ends on the frame members 78, the preferred construction ofthis jaw frame comprising a U-shaped strip of metal, having the jawproper projecting forwardly from its base or upper end, and the freeends of the arms of which are pivotally mounted on studs 26 and 27,carried by the frame members 7-8, friction washers 29 being locatedbetween the arms and frame .members, and the studs having heads whichretain the arms against the tension of said washers, thereby. permittingpivotal movement of the arms without lost motion.

The complementary jaw frame, including the jaw proper 2 also comprises atl-shaped strip 30, which overlies the strip 22, and the base of whichis spaced from the base of the strip 22 to permit the record strip topass freely therebetween when the jaws are open.

The complementary frame 30.compriscs arms 32 which are pivotally mountedon the arms 25 by studs 33, so that the comple mentary jaw frame mayhave pivotal movement on the primary jaw frame to open and close thejaws, as will presently be more fully described.

Pivotal movement of the complementary jaw member to open the jaws islimited by an engagement of the arms 32 with bosses 34- on the primaryjaw arm 25, so that when the arms are swung to contact with the bosses,the passage between the aws and 24 is open to permit said jaws to passfreely over the record strip to assume position relative thereto,whereby the strip may be advanced upon the closing of the jaws androcking of the jaw frames.

The opening and closing of the jaws and advancing movement of the jawframes is effected through links pivotally mounted on studs 36 on thelower ends of the complcmentary jaw arms 32 and operatively connectedwith the arms 36 on a rock shaft 37 rotatably mounted in the framemembers 7-8, connection between the links 35 and arms 36 being bypinandslot 3839, the pin and slot connection being provided to effect a slightdelay in operation of the strip advancing jaws upon return movement ofthe main crank shaft to insure clearance of the type prior to movementof the strip.

The rock shaft 37 also carries an actuating arm 41 having an elbow 42 atits free end, provided with a laterally directed pin 48 that seats in aslot 44 in the head 45 of a bell crank lever 46 that is pivotallymounted on a stud 4e? projecting inwardly from a frame plate -18 of themain machine. The arm d9 of said bell crank lever is pivotally mountedon a stud 50 on the yoke 51 carried on the end of the piston rod of thedash pot 9, so that when the dash pot piston is re ciprocated, the bellcrank lever arm 41 and rock shaft 37 are actuated to reciprocate thestrip jaws and open and close the jaws during their reciprocation. Thepiston rod is reciprocated in the dash pot by means of a lever 52pivotally connected with arms 53 rigidly mounted on the crank shaft 2,so

that-when the shaft is rocked forward and back upon manipulation of thehandle and return mechanism forming part of the main machine, the dashpot piston and its rod are reciprocated, cushioning operation of themachine and effecting operation of the strip feeding mechanism.

The rear edge of the upper jaw Q-e'l; is preferably provided with acutting edge 54-, against which the strip .may be drawn to effect itsseverance, and the front ed 'e of the jaw is preferably provided with annger slot 55 to facilitate threading the. strip between the jaws.

Assuming the parts to be constructed and assembled as described, whenthe operating handle is moved forwardly the bell crank lever lG andlever 52 work as a toggle, rocking the bell crank lever so that itsslotted head is moved forwardly, rocking the. arm '-.l:l and rock shaft37 forwardly. This forward movement of the rock shaft carries the arm 36forwardly, so that the pins 38 engage the forward ends of the slots 39in the links-15, moving the links forwardly. This forward movement ofthe links 35 draws the lower ends .of the complementary jaw frameforward against the bosses 3st on the primary jaw frame arms 25 andspreads the complementary jaw 24: away from the primary jaw 23 to openthe passage therebetween, so that the jaws may move freely over thestrip. lllovemeut of the link 35 continues after engagement of the arms32 with the bosses 35. so that the prin'iary jaw frame is moved for'ardly toward the platen, a distance corresponding to the desiredadvance of the record strip. After such forward movement of the parts,rearward movementof the crank shaft returns the links and levers to thefirst position, such return movement causing the pins 38 to engage therear ends of the slots 39 and move the links 35 rearwardly, therebyrocking the complementary jaw frame to close the complementary aw 2ftoward the main jaw 23 and grip the record strip, continued movement ofthe parts inducing rearward movement. of both jaw frames so that therecord strip is carried forwardly the de sired space distance.

It is apparent that the operation demain machine, and that while thestrip forwarding mechanism operates synchronously with the main machine,it is practically independent thereof, and while sim 1c in constructionand operation, will e ect a positive feed of the strip to present freshsurfaces for printing upon successive operations of the main machine.

What I claim and desire to secure byLettars-Patent is:

- mounting to afford ing or like machines, complementary jawframes,

1 Strip advancing mechanism for adding or like 'machines, comprisingcomple- 'mentary jaw, frames, one pivoted to the other and the carryingframe having pivotal long and short radial movement of the respectiveframes, operating mechanism connected with the jaw frame having shortradial movement, whereby the jaw frames are moved relative to eachother, and an abutment on the long radius frame engageable by the shortradius frame, whereby the frames are moved as a unit.

2. In strip advancing mechanism for adding or like machines,-complementary jaw frames, each comprising a jaw member, one framepivoted to the other-and the carrying frame having pivotal mountingwhereby the respective frames have relatively long and short radialmovement,o )erating mechanism connected withthe jaw f radial movementwhereby one jaw is moved relative to the other to close the jaws, and anabutment on-the long radius frame, engageable by the short radius framewhen the latter is moved in the opposite direction, whereby the jawmembers are opened and moved as a unit. 4

3. In strip advancing mechanism for addeach comprising a jaw' member,one frame pivoted to' the other, and the carrying frame having pivotalmounting to afford short and long radial movement of the framesrespectively, operating mechanism connected with the jaw member havingshort radial movement, whereby the jaws are moved relative to each otherto close and effect swinging movement of the frames as a unit in onedirection, and abutments on the long radius jaw frame engageable by theshort radius frame when the latter is moved in the opposite direction,whereby the members are opened and moved as a unit in the oppositedirection.

7 4. Strip advancing mechanism for addingpr flike machines, comprising?a j aw setv consisting of separate frame members, each having a aw,

one of the frame members berame having short I engagement ing pivotallymounted on the other and the carrying member having pivotal sup-port, an

able by the carried member, and means for operating the carried memberto effect engagement thereof with. the abutment, whereby the jaws arespaced and the set moved as a unit when the carried member is rocked inone direction, and the jaws are opened and the set moved as a unit inthe opposite direction when operation of said carried member isreversed.

'5. In combination with a main actuator, a jaw set comprising apivotally mounted carrying frame having a jaw, a, complementary framepivotally mounted on the carrying frame and having a jaw co-operativewith the jaw 0n the carrying frame to grip a recabutment on the carryingmember engagecomprising links and lever mechanism connected withthe-links and with the main actuator.

6. In combination with a main actuator, a rock shaft, an arm on the rockshaft, alever mechanism connected with the actuator and operable on saidarm to rock said shaft, a pivoted frame comprising a gripper jaw andabutments, a complementary frame pivoted on the first named framecomprising a jaw co-operative with the'jaw on the first named frame, andhaving arms adapted forv I with said abutments when the complementaryframe is -moved to s read the jaws, links on the complementary ramearms, and and said links.

7. In combination witha main actuator, record strip advancing mechanismcomprising a pivotally mounted frame having a jaw and abutment bosses, acomplementary frame mounted on the first named frame, having a jaw andhaving arms adapted for engagement with said bosses when thecomplementary frame is moved to spread the jaws, links connected withthe-complementary frame arms, a rock "shaft, means on the rock shaft foractuating said links, a bell crank lever having a slotted head, an armon the rock shaft having a pin located with in the slot in said head,and lever mechanism connected with the bell crank lever and with themain actuator for operating the record stri advancing mechanism uponoperation of t e main actuator.

In testimony whereof I afiix my signature.

BENJAMIN P. HAYES.

connection between the rock shaft

